Respuesta :

c=14.8
I used the Pythagorean Theorem a squared +b squared=c squared to get 
218=c squared then found the square root of 218.
Pythagorean Theorem: a^2 + b^2=c^2....13^2 + 7^2 = x^2...169+49=x^2...218=x^2... √218= 14.8 . So the answer is 14.8